Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- ARPES (1)
- And Al) (1)
- Coherent-potential approximation (1)
- Compton scattering (1)
- Doping dependencies (1)
-
- Dyson orbitals (1)
- Electronic structure (1)
- Electronic structures (1)
- Fe$_{3-x}$V$_{x}$X (X=Si (1)
- Ga (1)
- Gap function (1)
- Hole doped cuprates (1)
- KKR-CPA (1)
- Kohn-Sham (1)
- Korringa-Kohn- Rostoker formalism (1)
- STM (1)
- Strongly correlated electrons (1)
- Tl$_{2-x}$Cu$_x$Ba$_2$CuO$_{6+\delta}$ (Tl2201) (1)
- Tl2201 (1)
Articles 1 - 4 of 4
Full-Text Articles in Physics
Electronic Structure And Magnetism Of Fe$_{3-X}$V$_{X}$X (X=Si, Ga, And Al) Alloys By The Kkr-Cpa Method, A. Bansil, S. Kaprzyk, P. Mijnarends, J. Tobola
Electronic Structure And Magnetism Of Fe$_{3-X}$V$_{X}$X (X=Si, Ga, And Al) Alloys By The Kkr-Cpa Method, A. Bansil, S. Kaprzyk, P. Mijnarends, J. Tobola
Arun Bansil
We present first principles charge- and spin-selfconsistent electronic structure computations on the Heusler-type disordered alloys Fe$_{3-x}$V$_{x}$X for three different metalloids X=(Si, Ga and Al). In these calculations we use the methodology based on the Korringa-Kohn- Rostoker formalism and the coherent-potential approximation (KKR-CPA), generalized to treat disorder in multi-component complex alloys.
Competing Order Scenario Of Two-Gap Behavior In Hole-Doped Cuprates, Tanmoy Das, R. Markiewicz, A. Bansil
Competing Order Scenario Of Two-Gap Behavior In Hole-Doped Cuprates, Tanmoy Das, R. Markiewicz, A. Bansil
Arun Bansil
Angle-dependent studies of the gap function provide evidence for the coexistence of two distinct gaps in hole doped cuprates, where the gap near the nodal direction scales with the superconducting transition temperature Tc, while that in the antinodal direction scales with the pseudogap temperature. We present model calculations which show that most of the characteristic features observed in the recent angle-resolved photoemission spectroscopy (ARPES) as well as scanning tunneling microscopy (STM) two-gap studies are consistent with a scenario in which the pseudogap has a non-superconducting origin in a competing phase. Our analysis indicates that, near optimal doping, superconductivity can quench …
Dyson Orbitals, Quasi-Particle Effects And Compton Scattering, B. Barbiellini, A. Bansil
Dyson Orbitals, Quasi-Particle Effects And Compton Scattering, B. Barbiellini, A. Bansil
Arun Bansil
Dyson orbitals play an important role in understanding quasi-particle effects in the correlated ground state of a many-particle system and are relevant for describing the Compton scattering cross section beyond the frameworks of the impulse approximation (IA) and the independent particle model (IPM). Here we discuss corrections to the Kohn-Sham energies due to quasi-particle effects in terms of Dyson orbitals and obtain a relatively simple local form of the exchange-correlation energy. Illustrative examples are presented to show the usefulness of our scheme.
Effect Of Hole Doping On The Electronic Structure Of Tl2201, S. Sahrakorpi, Hsin Lin, R. Markiewicz, A. Bansil
Effect Of Hole Doping On The Electronic Structure Of Tl2201, S. Sahrakorpi, Hsin Lin, R. Markiewicz, A. Bansil
Arun Bansil
We discuss doping dependencies of the electronic structure and Fermi surface of the monolayer Tl$_{2-x}$Cu$_x$Ba$_2$CuO$_{6+\delta}$ (Tl2201). The TlO bands are found to be particularly sensitive to doping in that these bands rapidly move to higher energies as holes are added into the system. Such doping effects beyond the rigid band picture should be taken into account in analyzing and modeling the electronic spectra of the cuprates.